1. (2x+5)^3= 2. (4x+2)^3= Bantu jawab..
Matematika
Rhm11
Pertanyaan
1. (2x+5)^3=
2. (4x+2)^3=
Bantu jawab..
2. (4x+2)^3=
Bantu jawab..
1 Jawaban
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1. Jawaban ArfanIrsyad
1. (2x+5)^3
= (2x + 5)(2x + 5)(2x + 5)
= (4x^2 + 10x + 10x + 25) ( 2x + 5 )
= (4x^2 + 20x + 25) (2x + 5)
= 8x^3 + 40x^2 + 50x + 20x^2 + 100x + 125
= 8x^3 + 60x^2 + 150x + 125
2. (4x+2)^3
= (4x + 2)(4x + 2) (4x + 2)
= (16x^2 + 8x + 8x + 4) (4x + 2)
= (16x^2 + 16x + 4)(4x + 2)
= 64x^3 + 64x^2 + 16x + 16x^2 + 32x + 8
= 64x^3 + 80x^2 + 48x + 8